Summary
Grade 7 looks and behaves like Grade 2 and is used in the same kinds of plant, so mixed lots happen. The small palladium addition is what the buyer pays for.
Test every piece for palladium and keep Grade 7 apart. See Titanium Grade 7 scrap.
Side by Side
| Titanium Grade 2 | Titanium Grade 7 | |
|---|---|---|
| Base | Commercially pure titanium | Commercially pure titanium |
| Palladium | None | About 0.15% |
| Key XRF marker | No alloying elements | Palladium (Kα near 21 keV) |
| Typical service | Heat exchangers, desalination | Reducing acids, brine and chlorine service |
| Value note | Standard CP titanium | Palladium adds value |
Composition Compared
Nominal compositions compared element by element. Values are the nominal figures from each grade page; change either grade to compare others.
These two grades read almost the same on XRF; confirm them with light-element analysis, OES or a laboratory.
On the XRF
Switch the grade to see how the fingerprint changes. See how XRF sorts nickel alloys.
FAQ
What is the main difference between Titanium Grade 2 and Grade 7?
Titanium Grade 7 (UNS R52400) is Grade 2 (UNS R50400) with about 0.15% palladium added for resistance to reducing acids. Palladium is visible on XRF and is the only practical way to separate them, since weight, colour and magnetism are the same. A Grade 7 lot should carry readings showing the palladium.
Can Titanium Grade 2 and Titanium Grade 7 scrap be mixed?
No. Keep them separate. Because each melt is made to one grade, Grade 7 hidden in a Titanium Grade 2 lot shifts the heat chemistry and the buyer adjusts the offer to match.
What are the UNS numbers of Titanium Grade 2 and Titanium Grade 7?
Titanium Grade 2 is UNS R50400 and Titanium Grade 7 is UNS R52400.
Can Titanium Grade 2 and Titanium Grade 7 scrap be sold in one lot?
Not without losing value. They differ most in titanium and palladium, so a melter making either grade wants the other kept out. Mipra Steel buys and sells them as separate lots.
Sources and Review
Composition figures on this page are the nominal values from each grade's own page on this site, where the producer datasheet or standard is named in full. The comparison widget reads the same values. The sources behind the grades are listed below.
- Rolled Alloys, Titanium grades and relative properties: Titanium Grade 2 Buyer, Importer and Exporter, Titanium Grade 7 Buyer, Importer and Exporter
Published by Mipra Steel, Khetwadi, Mumbai · Last updated